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Billy was counting the number of wheels and bike seats at the playground. He saw tricycles and bicycles. He counted 79 wheels and 28 seats.How many bicycles did Billy see?
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4 votes
Billy was counting the number of wheels and bike seats at the playground. He saw tricycles and bicycles. He counted 79 wheels and 28 seats.How many bicycles did Billy see?

User Xushao
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2 Answers

4 votes
Billy saw 5 bikes
System of equations
2x + 3y = 79
x + y = 28
User EinUsername
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7.9k points
4 votes
28 times 3 is 84. That is 5 too many wheels. If you take 5 tricycles of and replace them with 5 bikes you have 5 less wheels. This means Billy saw 5 bikes and 23 tricycles.
User Silvia Doomra
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